If I am sweating, am I exercising hard enough?
Maybe, maybe not. Ideally, you should maintain your heart rate at 60-90% of maximum heart rate and perform this activity 3-5 days a week for 20-60 minutes.
To determine if it is safe for you to be become more physically active go here.
Click here to learn how to calculate your target heart rate range.
Stephen D. Ball, Ph.D., Associate Professor, Nutritional Sciences, College of Human Environmental Sciences, University of Missouri Extension
Last update: Thursday, December 04, 2008